Locomotive-smoke-box structure



Jan. 13, 1931. W. L. BEAN LOCOMOTIVE SMOKE BOX STRUCTURE Filed March 5,1925 3 Sheets-Sheet 1 v a o e W i mm mL. M mw fh la, im mm w\|\ `m5 5./SAQ 12mm, @Qxv/ H/ @www bh im rm \w .R y a NSN Jan. 13, 1931. w. i..BEAN 1,788,559

LocoMoTIvE SMOKE 150x STRUCTURE Filed'wlaron 5 1925 5 Sheets-sheet' 2Jan. 13, 1931. w. l.. BEAN LOCOMOTIVE SMOKE BOX STR'UCTUR Filed March 5l1925 :s sheets-sheet 3 Invenov':

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Patented Jan. 13, 1931 UNrTED .SITA

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` WILLIAM'LQBEAN, or wnsrHavana3 Connncfrrcufr-l `A Y LoConoTIvE-snoxnnoir' STRUCTURE I;

C Application llledrllarch 57 1925. j Serial No. 13,242.

' This invention relates Ato v-l o'cornotive smoke-boxstr-ncturefa'having many features of novelty relating .tothe draftappliances,

including the detlectors .and the `sparknet` `s ting and to "their meansofattachment to the smoke box; p C

The invention will be best yunderstoodby reference to the followingdescription, when taken in connection with the accompanying lo drawingsof one specilic embodiment theresV eeticvfl taken on the line22ofFigure1- Figures 3, 4, 56, i7 `8 and 9 are sections taken on thecorresponding section lines of Figure 2.

Figure l0 isa view of the inside `ofthe smoke-box wall illustrating the`supports for the parts mounted thereon. p v

Figure ll is a section illustrating the parts mounted on the smoke-boxwall and showing the sameindependently of, their mounting. l

horizontal deilector plates.

i Referring `.to thejdrawings, andv to theV presents a support for thesmokebox 21 the' latter in the present example being a castlng, asdistinguished from a structure built up of sheet metalV and other`fabricatedV shapes. The smoke-box presents an. opening 27 for an exhaustp1pe128.v Y

The `delector, which deects the gases in a downward direction andcompels them to flow first to the forward end of the smokebox, andthence in an upward and rearward direction through the spark .nettinginto the path of the exhaust steam toward the Figure 12 is'a top viewillustrating thev C stack, will now bedescribed, reference being,

had at first to Fig. vl1. The ldeflector comprises a rear portiondesignatedv generally bythe numeral 52,V andV a lower portion designatedgenerally by the .numeralg53, each of which is composed of a pluralityofsections or plates now to be described, reference being had to Fig. 2.The rear` portioncomprises upper left and right plates 54 and 54', lowerleft. and right plates 55 and 55, an ,upper inspection plate 56, and alowervinspection plate 57. The plates 54 and 54 have overlappingmarginal portions Y 58and-59 (see Fig. 3), and herein the Amarv ginalportion58 isotfset to provide a recess 60, which receives themarginal'portion 59 thus M providingv al rjoint which prevents Sparksfrom passing through,v:even though the plates should become warped tovquite an'eXtent. Similarly, the plates 55 land 55A q are vprovidedgwithoverlapping marginal portions 61`and62 (see Fig..4), the formerpresenting a recess 63 which receives the margin `62. -The plates 54 and55 have tongue and groove connection with each other, the plate 54 tothis end having a thickened marginal portion 64, presenting agroove 65,which receives a marginal :portion 66 of the plate 55. The plates 54,vand 55 have similar tongue and groove connection `with each other (seeFig.' 6), the plates` 54 to this Vend having a thickened p portion 64presenting a groove65, which receives ya marginal l portion `66". of theplateY 55. i `The plates 54, and 55 are joined to each other about apipe, herein a superheater pipe 67, and the plates 54. and 5,4-l varejoined to eachother about another pipe, herein a superheater pipe 67',and to prevent thel leakage of gases at these joints, there are providedpackingsone of'w'hich is illustratedin Fig` 8. It willbe remembered thatthe plate "54is provided. with a thick-` ened marginal portion 64, whichpresents a groove 65, utilized in joining-the plates 54V andl 55together. 'This thickened vportion and its groove are continued in ahalf circle about the pipe -67 (see Fig. 2),- andthere is provided apacking 68 of appropriate fire-resisting..material, such as asbestos.,which is received in this groove and extendstherebeyond into engagementwith the periphery of thepipe (see Fig. 8). The plate 55has a similarthickened marginal-portion 69 (see Fig. 2), having a groove 70 toreceive the packing 68 which is in the form of a ring about the pipe. Alike packing con-Y struction isemployed between the plates 54', and 55'and the pipe 67'. .v

VThe upper inspectionplate 56 has a marginal portion 71, which, 'asshown in Fig. 11, is offset to provide alrecess 72'for correspondingmarginal portions of the adjacent plates 54 and 54', and the Vjoint thuspresented prevents the passage of sparksthrough the deiiector, eventhough i a' considerable extent.

the plates should become warped to quite Similarly, the largerinspection plate 57 has a marginal portion 73, which as shown in Fig. 18is offset vto provider a recess 74 which receivesthe adjacent marginalportions of the plates andS55'. `A. vtongue and groove connectionisprovided between 'the inspection plate 57 and the plates 54 and 54' bycontin-l uing the thickened Vportion '64 and 64' and their grooves and65'. Tt should now be evident, by referenceto Fig. 11, that theVinspection plate 57 can be slid in an upward direction into thedescribed groove in la slightlyinclined position, and its lower edgetheny swung rearwardly'into place. VIt isk conveniently secured in placeby a series of fastening element-s, one of which is illustrated inFig.9. In theV present example, `this fastening element is a pin 75, whichis permanently secured to the plate 55 or 55', as

thecase maybe, as by having a reduced@ portion 7 6 which extendsVthrough the plate, andis riveted or headed over at 77. The body of thepin extends through an opening-78 provided in the offset marginalportion 73 of theV plate 57, and `this body portion, where it extendsthrough theplate,

:receives a washer 79 conveniently held in place Yby a splitlocking key80 in an elongated slot i 81 provided in theY pin. Like fasteningelements are employed for the upper. inspection plate. The inspectionplates vmay be `provided with appropriate handles 82 and 83,respectively V(see Fig.

2), andas theplates 55 and 55' are rather large and heavy, they may beprovided with similar handles 84 and 84'.

The lower portion 53 of the defiector will nowl be described, referencebeing had .to

lso

Fig. 11. Here, the deiiectorpextends about the vexhaust and live steampipes, and to enable the deflector to be `fitted about these pipes, itcomprises two plates ,85 and 86 shown in plan inFig. 12. The vrear plate85 has its rear marginal portion'received iny grooves 87' and 87'-presented by thickened marginal portions 88 and 88' formed on the plates55 and 55', respectively; 'At` this point, it may be mentioned that thecorner of the defiector (see Figfll) is preferably rounded on bothsides. This formprevents eddy currents and improves the draft bypromoting a smoother flow of gases below, as well as above theYdeflector. The rear plate 85 is conveniently putin place 4by being setat first in an inclined position, represented iny dotted lines in Fig.11,I to enable it to ,clear the .live steam pipes... `It iswthen loweredand'swung into position with its rear marginal portion in the groove.The plates 85-and786 likewise have tongue and groove connection Vwithleach other, the plate *85 to' this end having a thickened'marginalpoi'- Vtion 89 hprovided with a groove 90, which 38,. The packingprevents leakage'and also prevents `wear of the parts due to one rubfbing .against ytheV other'.v L "Where lthe plates 85l and4 86 are'disposed about the exhaust pipe 28, they presentan opening 95, whichreceives the exhaust pipe, andl'above this opening is providedausualfexhaust nozzle 96, whichris secured to the plates, as well as tothe .exhaust pipe, -bygbolts 97. In this way, the plates are securelyunited with each otherand with the exhaust pipe, theV latterjtherefore'serving as a pedestal-to supporty the plates. Y

Theremaining supports for the deflector will now be described, referencebeing had at first'to Fig. V10'.` The' several plates 54, 54', 55, 55',56 and ,57, which compose thel deiector rear portion when' iittedtogether, have a circular marginal portion, which has tongueand'grooveconnection vviththe circumferential wall ofthe smoke-box, `as byproviding the., latterV with an integrally '1 formed projection 98 '(seeFigfl), which presents a groove 99 in which said marginal portion islreceived.' This'interengageinent of the deflector and the. smoke-box.enables the several vplates composing the deflector to be put in placeand securely held," without the necessity of employing any fastening.elements such as bolts, '.or the like. This isa matter of considerablepractical importancein the maintenance oflocomotives, begV l causefwherebolts are used, inasmuch as. theyare exposed to thek abrasiveandcorrosivepaction ofthe products of combustion, they become corrodedrapidly, and when it becomes necessary to remove the deflector' for thepurpose of obtaining access to the lues andother parts, it usuallybecomes necessary to destroy the bolts by cutting them olf. With thedescribed construction, the removal of the deflector plates can beaccomplished in a small fraction of the time usually consumed inremoving the detlectorVV plates ot all former constructions.

Referring now to Fig. 2, the several'plates which compose the rearportion of the delector are put in place by lirst introducing the lowerleft-hand plate 55, then the lower vented by the provision of stops,herein lugs 101' formed as integral projections from the circumferentialwall of the smoke-bok casting. The lower frontplate 86 is conven-viently supported by having its end received in grooves 102' presented byprojections 108', herein formed as integral parts of the smokeboXcasting. The plate 86 is simply pushed horizontally into place, andv issecured in place by the previously described bolts 97, which secure theexhaust nozzle to the exhaust pipe.

Herein the plate 86 has'a depending marginal portion 104C, to which adamper plate 105 is secured, as by bolts 106. The ends of the damperplate are conveniently supported by being received in grooves 108',`herein formed in projections 109', formed as integral parts of thesmoke-'box casting. In the present example, the `projections 103' and109' are connected to each other-'by .projections 110', formedasintegral parts of the smoke-box, and these projections prevent thepassage of sparks which might otherwise occur at these points. At therear of the described deflector, there is another defiector comprising aplate 111 (see Fig. 1), whose ends are received in grooves 112'presented by projections 113', herein formed as integral parts otI thesmoke-box casting. It should be understood, of course, that, as is usualin locomotive practice, the rear edge of this plate is below thelowermost row off superheater iues. Forward of this de- VflectorV plateis an adjustable damper plate plate 86. form a groovev VVfor the spark/1,625,784,1,63939a 1,647,253@ issued April.

26", 1-9'27,"August 23,1927', and November 1. 1927, respectively, onapplications divided `from thish application, asl originally tiled. -I

alsoareferto my copendng appliaction'Seas originally nied. c

\ 1. Inarlfocomotive smoke-box structure',

lrial No. 99,417, divided from this application'.

smoke-box wall'and: a deiector Vextending transversely thereof, saidwallV and Vdeflector having tongue and groove connection withveachother, said. deilector comprising a plurality ot plates lying inthe' same general y planeandfhaving. tongue and groove connec=tion'fwlith each other, at least one of said plates having its edgesengaging the edges of adjacent plates and. servingv to hold the latter`in assembled relation with saidwall.

2. In a locomotive smoke-box structure, a4

CTX

yplurality of plates lying in the same general plane and having tongueand groove connection with each other, at least one of said plates beinga key plate and having an end and two side edges engaging adjacentplates to hold the same in assembled relation with each other and withsaid wall, said key plate being slidable in a direction away from theplate engaged by said end edge to provide transversely thereof, saidwall and deflector having tongue and groove connection `with each-other,said deflector comprising a plurality of plates lying in the samegeneral plane and having tongue and groove connection with each other,at least one of said plates having its edges engaging the edges ofadjacent plates to support said plates in assembled relation to eachother andA said wall.

4. In a locomotive smoke-box structure, a circumferential wall having aninwardly extending projection following the curvature of the wall andprovided with an inwardly openingrgroove, and a delector extendingtransversely of said wall and having a mar ginal portion received insaid groove, said delector comprising a plurality of plates lying in thesame general plane, atleast one Vof which plates is provided with agroove and at leastvone other of which plates has a portion received insaid grooves Vfor holding said plates in assembled relation with eachother andwith said wall;

5.. In a locomotive smoke-box structure, a

Eri

plurality of defiector-plates arranged` at an' Y angle to each other,and a curved deflector plate connecting saidrst mentioned angularlydisposed plates, the adjacent edges of said rst mentioned angularlydisposed l plates and the edges of said curved connecting plate beingprovided with grooved portions for sliding engagement withf-eachV other.

6. In a locomotive smoke-box structure a cylindrical wall having aninwardly radially extending rib following the curvature of the wall andprovided with an inwardly opening groove,' and a plurality of flatplates l movable transversely of said wall into and out of said Vgroovefor assembly with and removal from said wall, said sections havinginterengaging edges Jfor holding saidsections in assembled relation withsaid 'wall and "with each other to form a spark vde-A flector. extendingacross said box.

In testimony whereof, I have signed my name to this specification.

WILLIAM L. BEAN.

ifrearsse.

